<!--写死-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>simple</title>
  <script src="./vue.js"></script>
</head>
<body>
  <div id="app">
    <div>
      <input>
      <button>提交</button>
    </div>
    <ul>
      <li>1</li>
      <li>2</li>
    </ul>
  </div>

  <script>
    new Vue({
      el: '#app'
    })
  </script>
</body>
</html>